Vol. 223, No. 3, 2025

Theoretical and Mathematical Physics

Solving the missing baryon problem: A review of observational and theoretical advances

V. Priyadharshini, S. Vijikumar, and V. Bhuvaneshwari p. 879 abstract

A study on the expansion of the universe with Lyra geometry in a Bianchi type V space–time in the presence of dark energy

D. I. Mazumder p. 888 abstract

Hall current and MHD impacts on a 3D Maxwell nanofluid flow across a porous stretching surface

G. Murali, J. Venkata Madhu, G. Deepa, P. Suresh, and S. K. Nuslin p. 899 abstract

Radiation influence on transient MHD convection over a permeable surface with thermal diffusion

Sk. Nuslin, D. A. Rawoof, P. L. Pallavi, D. Padma, D. Naheed, and M. L. Gundagani p. 915 abstract

Thermal behavior study of carbon nanofiber nanofluids and banana leaf nanofluids in a rotating disk flow

K. Jyothi, and A. P. Lingaswamy p. 926 abstract

Drug concentration after intravenous administration: A mathematical approach

K. Lakshmi Narayan, K. Kondala Rao, V. Sivaramakrishna Reddy, G. Ranjith Kumar, and K. Ramesh p. 935 abstract

Dynamics of a three species syn-ecological ammensalsim model: A stochastic approach

K. Kondala Rao, K. Lakshmi Narayan, G. Ranjith Kumar, K. Ramesh, and A. V. Papa Rao p. 944 abstract

Study of a flat universe using the FRW model

A. Shyam, G. Sarma, and B. B. Bora p. 952 abstract

Magnetohydrodynamic flow through a porous medium in a coaxial circular duct

M. Siva Sankar Reddy, E. Kiran Babu, and K. Raghavendra p. 960 abstract

Unitary Ramanujan sum for power system applications

E. Kiran Babu, Y. Rajasekhara Gowd, and G. Satheesh p. 967 abstract

Hall current and thermal diffusion effects on an unsteady MHD free convection flow of non-Newtonian fluid

Shaik Nazia, and B. Seshaiah p. 974 abstract

Heat transfer analysis of a pineapple leaf fiber nanofluid/MWCNT–water convective flow over a disk

V. R. Prasad, K. Jyothi, C. Sai Pranathi, and K. Reddy p. 992 abstract

Hybrid FEM-neural network approach to radiative slip flow of TiO\(_2\)–SiO\(_2\) nanofluid over stretching surfaces

K. Jyothi, and A. P. Lingaswamy p. 1000 abstract

Effects of aligned magnetic field and thermal radiation on an unsteady MHD Jeffrey nanofluid flow past an isothermal inclined plate

A. P. Lingaswamy, Annareddy Sailakumari, Palle Prathapa Reddy, Damodara Reddy Annapureddy, and A. G. Gopinath p. 1016 abstract

Enhancing microfluidic transport via pulsatile flow: A study of flow regimes and efficiency optimization

G. Durga Priyadarsini, B. Umesh, G. C. Sankad, and G. Murali p. 1032 abstract

Magnetohydrodynamic unsteady rotating Casson fluid flow with Hall and ion-slip impacts

Pudari Chandra Mohan, Y. Suresh Kumar, and Anjanna Matta p. 1048 abstract

Three-dimensional MHD flow of a radiative Eyring–Powell nanofluid: Exploring Hall effects and heat transfer

G. Murali, P. Lakshmi, M. Amarnath, J. Venkata Madhu, and A. P. Lingaswamy p. 1070 abstract

Effects of thermo physical aspects of radiant-heating on an unsteady magnetohydrodynamic hybrid nanofluid flow

K. Viswanath, A. P. Lingaswamy, K. Raghavendra, Raghunath Kodi, and Ramachandra Reddy Vaddemani p. 1087 abstract